That connector problem sounds a bit strange. The models of that era should have the same slip ring. Do you have picture of the different connectors?

https://www.realoem.com/bmw/enUS/par...&q=61318379091

__________________
E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey